A build program is only as reliable as the materials arriving to support it, and lead times on mechanical, fixture and finishing items have been the single biggest source of program slippage we see across Hills District jobs.
Where lead times bite hardest
Ducted AC units, custom-sized ductwork, and zoning controllers are frequently the longest lead items on a build — which is exactly why the specification decision covered in our ducted vs split piece needs to happen early, not at frame stage. Once you know what you’re ordering, the order needs to go in well before the mechanical trade is due on site — see our sequencing piece for where that fits in the program.
Building slack into the program
The builders who handle this well aren’t the ones with perfect suppliers — they’re the ones who build realistic lead-time buffers into the program from day one, and who have a single point of accountability for procurement rather than leaving it to whichever trade orders their own materials. For multi-job builders, this is exactly the gap a dedicated procurement partner fills; we’ve used Covert Procurement for bulk material ordering and lead-time tracking across concurrent sites.
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